jehanne/sys/src/libc/9sys/wait.c

42 lines
977 B
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
#include <fcall.h>
Waitmsg*
wait(void)
{
int n, l;
char buf[512], *fld[5];
Waitmsg *w;
n = await(buf, sizeof buf-1);
if(n < 0)
return nil;
buf[n] = '\0';
if(tokenize(buf, fld, nelem(fld)) != nelem(fld)){
werrstr("couldn't parse wait message");
return nil;
}
l = strlen(fld[4])+1;
w = malloc(sizeof(Waitmsg)+l);
if(w == nil)
return nil;
w->pid = atoi(fld[0]);
w->time[0] = atoi(fld[1]);
w->time[1] = atoi(fld[2]);
w->time[2] = atoi(fld[3]);
w->msg = (char*)&w[1];
memmove(w->msg, fld[4], l);
return w;
}